Fractionation and mobility risks of heavy metals and metalloids in wastewater-irrigated agricultural soils from greenhouses and fields in Gansu, China

Cao, Chun1; Zhang, Qiang2; Ma, Zhen-Bang3; Wang, Xue-Mei4; Chen, Huan5; Wang, Jun-Jian6,7

2018-10-15

10.1016/j.geoderma.2018.05.001

GEODERMA   影响因子和分区

0016-7061

1872-6259

Wastewater irrigation reduces the pressure on freshwater usage but leads to the accumulation of heavy metal (loid)s in soils. This study investigated heavy metal(loid)s (As, Cr, Cu, Ni, Pb, and Zn) in the acid-soluble (F1), reducible (F2), oxidizable (F3), and residual (F4) fractions of soils from greenhouses and fields in Baiyin City, Gansu, China, which had been irrigated with treated industrial and municipal wastewater. Risk assessment (RAC) and modified risk assessment (mRAC) codes were used to estimate the environmental risks based on metal mobility. Results showed that more than half of each studied heavy metal(loid) (72.6%-97.4%) was present in the residual fraction (F4), which is non-bioavailable. Both the concentrations and percentages of metals in the bio-accessible fractions (F1, F2, and F3) showed no significant differences (p > 0.05) between rhizosphere and bulk soils. The greenhouse soils had higher concentrations and percentages of metals (except Pb) in bio-accessible fractions compared with field soils. Similarly, compared with irrigation using treated municipal wastewater, irrigation with treated industrial wastewater resulted in higher concentrations and percentages of all the studied metals in the bio-accessible fractions of soils. The average RAC value of each heavy metal(loid) in soils suggested medium risks from Zn, low risks from As, Cu, Ni, and Pb, and no risks from Cr. According to the mRAC values for 120 soil samples, there were only 13.3% of soils with no potential adverse effect, but 83.3% of soils with a low potential adverse effect and 3.3% of soils with a medium potential adverse effect.

Mobility risk assessment BCR procedure ANOVA Soil compartment Cultivation mode Irrigation type

SCI ; EI

英语

通讯

China Scholarship Council (CSC)[201708625062]

Agriculture

Soil Science

WOS:000436053500001

ELSEVIER SCIENCE BV

20182005183364

Analysis of variance (ANOVA) ; Carrier mobility ; Cultivation ; Greenhouses ; Heavy metals ; Irrigation ; Lead removal (water treatment) ; Risk assessment ; Risk perception ; Soils ; Wastewater treatment

Water Treatment Techniques:445.1 ; Industrial Wastes Treatment and Disposal:452.4 ; Soils and Soil Mechanics:483.1 ; Metallurgy and Metallography:531 ; Semiconducting Materials:712.1 ; Agricultural Methods:821.3 ; Farm Buildings and Other Structures:821.6 ; Accidents and Accident Prevention:914.1 ; Statistical Methods:922

AGRICULTURAL SCIENCES

Web of Science

1.Northwest Normal Univ, Coll Geog & Environm Sci, Lanzhou 730070, Gansu, Peoples R China
2.Northwest Normal Univ, Coll Comp Sci & Engn, Lanzhou 730070, Gansu, Peoples R China
3.Lanzhou Univ, Coll Earth & Environm Sci, Lanzhou 730000, Gansu, Peoples R China
4.Northwest Normal Univ, Coll Chem & Chem Engn, Lanzhou 730070, Gansu, Peoples R China
5.Clemson Univ, Belle W Baruch Inst Coastal Ecol & Forest Sci, Georgetown, SC 29442 USA
6.Southern Univ Sci & Technol, Sch Environm Sci & Engn, Shenzhen 518055, Guangdong, Peoples R China
7.Southern Univ Sci & Technol, Guangdong Prov Key Lab Soil & Groundwater Pollut, Shenzhen 518055, Guangdong, Peoples R China

Cao, Chun,Zhang, Qiang,Ma, Zhen-Bang,et al. Fractionation and mobility risks of heavy metals and metalloids in wastewater-irrigated agricultural soils from greenhouses and fields in Gansu, China[J]. GEODERMA,2018,328:1-9.

Cao, Chun,Zhang, Qiang,Ma, Zhen-Bang,Wang, Xue-Mei,Chen, Huan,&Wang, Jun-Jian.(2018).Fractionation and mobility risks of heavy metals and metalloids in wastewater-irrigated agricultural soils from greenhouses and fields in Gansu, China.GEODERMA,328,1-9.

Cao, Chun,et al."Fractionation and mobility risks of heavy metals and metalloids in wastewater-irrigated agricultural soils from greenhouses and fields in Gansu, China".GEODERMA 328(2018):1-9.